S1 Supporting Information Strong Metal-Support Interactions of TiN- and TiO 2 -Nickel Nanocomposite Catalysts Samuel H. Gage, † Chilan Ngo, † Valerio Molinari, ‡ Mauro Causà, § Ryan M. Richards, † Francesco Silvio Gentile, § * Svitlana Pylypenko, †* Davide Esposito ‡* † Department of Chemistry, Colorado School of Mines, Golden, Colorado 80401, United States ‡ Biorefinery and Sustainable Chemistry, Max-Planck Institute for Colloids and Interfaces, Potsdam 14424, Germany § Department of Chemical, Materials, and Industrial Production Engineering, University of Naples, Federico II, Naples 80125, Italy *Corresponding Authors  Dr. Davide Esposito Email: davide.esposito @mpikg.mpg.de  Dr. Svitlana Pylypenko Email: spylypen@mines.edu  Dr. Francesco Gentile Email: francesco.gentile@unina.it 1. Experimental Section Figure S1. TGA of Ti-urea gel under N 2 . Table S1. Elemental Analysis of TiO 2 and TiN prepared different temperatures. Entry T (°C) N (% w/w) H (% w/w) C (% w/w) 1 300 24,8 2,3 12,1 2 400 9,3 1,4 4,8 3 500 0,6 0,7 0,3 4 600 0,4 0,2 0,2 5 700 0,4 - 0,2 6 800 0,3 - 0,2 7 TiN 14,2 1,2 5,6 100 200 300 400 500 600 700 800 900 1000 20 40 60 80 100 Mass % T (°C)